16 
Table IV. — Effect of fertilizers on weight of crops in Experiment II— Continued. 
Pot 
Nos. 
153,154. 
157, 158. 
161,162. 
165,166. 
169, 170. 
173,174. 
Fertilizer added. 
N-K-Ca-L-P 2 (phos- 
phate rock) 
N-K-Ca-P 2 (phosphate 
rock) 
N-K-La-L-P 1/2 (super- 
phosphate) 
N-K-Ca-P 1/2 (super- 
phosphate) 
N-K-Ca-L-Px (super- 
phosphate) 
N-K-( a-P 1 (super- 
phosphate) 
Millet I. 
"Weight of 
crop. 
Green. Dry 
Gm. 
16.7 
0) 
40.7 
30.5 
46.5 
48.5 
Gm. 
11.7 
26.6 
21.5 
30.0 
32.7 
Num- 
ber of 
plants. 
Millet II. 
Weight of crop. 
Green. Dry. Heads 
Gm. 
98.5 
87.5 
61.0 
44.5 
89.5 
79.5 
Gm. 
44.2 
39.1 
38.1 
22.7 
45.0 
36.8 
Gm. 
9.4 
8.7 
5.6 
3.6 
7.4 
6.3 
Num- 
ber of 
plants. 
Millet III. 
Weight of 
crop. 
Green. Dry, 
Gm. 
34.5 
66.8 
131.9 
78.4 
149.6 
117.5 
Gm. 
17.0 
30.0 
63.8 
40.5 
70.2 
57.6 
Num- 
ber of 
plants. 
1 No crop. 
The first crop was planted February 2 and harvested May 2, the 
second crop planted May 8 and harvested August 10, and the third 
crop planted October 12 and harvested January 6. The soil was 
well mixed, aerated, and dried in the air for a short time between 
plantings. 
The results of the first series were almost completely verified by 
this second planting. The pots to which no phosphate was added 
produced a very poor growth. All applications of phosphate 
increased the growth, the soluble phosphates having the greatest 
influence, while phosphate rock had the least. 
The second crop of millet in this series again verified the results of 
the first series with marked regularity. When added at the rate of 
0.007 per cent P 2 5 , phosphate rock and the slags were most efficient. 
The availability of the phosphate rock when added at the rate of 
0.014 per cent P 2 5 , was very high, but did not surpass that of sodium 
phosphate, and the latter, when added at the rate of 0.021 per cent 
P 2 5 , produced a heavier growth than the former when added at the 
rate of 0.028 per cent P 2 5 . This apparently is further evidence of 
the more lasting effect of phosphate rock when added in small 
quantities, and of the superiority of the soluble phosphates when 
added in larger quantities. 
At the same time that the pots in Experiment I were ready for the 
third planting of millet those in Experiment II were also ready for 
the third crop of millet. In view of this fact, another complete 
application of nitrogen and potash was made in the former with the 
results already given, while a second application of phosphate was 
made to the latter in order to compare the two. The most obvious 
results were the rapidity of growth in Experiment II as compared 
with that in Experiment I and the increase in w T eight of plants at 
